Grace
Caribou County, Idaho · EIA plant ID 827 · Operator: PacifiCorp
Nameplate33MWSummer 33 MW
Generators3in service
Net generation83GWh12 mo to Dec 2025
Capacity factor29%hydro units, summer MW
Heat rate—thermal plants only
First online1923
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 90.5 | 31.3% | — |
| 2002 | 74.6 | 25.8% | — |
| 2003 | 73.9 | 25.6% | — |
| 2004 | 40.3 | 13.9% | — |
| 2005 | 61.9 | 21.4% | — |
| 2006 | 64.5 | 22.3% | — |
| 2007 | 76 | 26.3% | — |
| 2008 | 61.4 | 21.2% | — |
| 2009 | 59.1 | 20.4% | — |
| 2010 | 63.5 | 22.0% | — |
| 2011 | 163.4 | 56.5% | — |
| 2012 | 82.6 | 28.5% | — |
| 2013 | 71 | 24.6% | — |
| 2014 | 56.1 | 19.4% | — |
| 2015 | 63.3 | 21.9% | — |
| 2016 | 78.1 | 26.9% | — |
| 2017 | 162.1 | 56.1% | — |
| 2018 | 123.9 | 42.9% | — |
| 2019 | 80.4 | 27.8% | — |
| 2020 | 100.7 | 34.8% | — |
| 2021 | 63.2 | 21.9% | — |
| 2022 | 44.2 | 15.3% | — |
| 2023 | 72.9 | 25.2% | — |
| 2024 | 88.1 | 30.4% | — |
| 2025 | 82.7 | 28.6% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Hydroelectric | HY | 11 | 11 | Jul 1923 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 11 | 11 | Jul 1923 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 11 | 11 | Jul 1923 | Operating | — | coming soon |
Owner / operator
Operator: PacifiCorp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PacifiCorp | 100.0% | 33 MW |
Nearby plants
Within 80 km.
| Last Chance | 2 MW | 10.4 km |
| Soda | 15 MW | 14.4 km |
| Oneida | 30 MW | 30.1 km |
| Marsh Valley Development | 2 MW | 30.7 km |
| Mink Creek Hydro | 3 MW | 32.4 km |
| Bannock County LFG to Energy | 3 MW | 54.4 km |